For decades, American national standards institute ANSI flange design has been for the oil and gas industry is provided one of the sealing technology, and effectiveness.
几十年来，美国国家标准学会设计的ANSI法兰已经为石油和天然气工业提供了壹种适用的密封技术，而且卓有成效。
A committee sponsored by the American National standards Institute (ANSI) that is responsible for a variety of system interconnection standards.
美国国家标准学会(ANSI)发起成立的一个委员会，负责多种系统互联标准的制定。
CAUTION NOTICE: The American National Standards Institute (ANSI) approval date on the front cover of this standard indicates completion of the ANSI approval process.
警示通知：美国国家标准协会在标准的封面页标上日期就表示标准通过ANSI的认证。
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